814
WWCN11 CWTO 050305
SEVERE WEATHER BULLETIN
ISSUED BY ENVIRONMENT CANADA
AT 11:05 PM EDT FRIDAY 4 JUNE 2010.
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WATCHES/WARNINGS IN EFFECT FOR SOUTHERN ONTARIO...
SEVERE THUNDERSTORM WATCH FOR:
=NEW= NIAGARA
=NEW= CITY OF HAMILTON
CHATHAM-KENT - RONDEAU PARK
ELGIN
SIMCOE - DELHI - NORFOLK
DUNNVILLE - CALEDONIA - HALDIMAND
OXFORD - BRANT.
..SEVERE THUNDERSTORMS ARE POSSIBLE THIS EVENING..
WARM MOIST AIR IS BEGINNING TO MAKE ITS WAY INTO THE REGIONS AS
A WARM FRONT PUSHES NORTHWARD, CREATING CONDITIONS FAVOURABLE
FOR THE DEVELOPMENT OF THUNDERSTORMS. SOME OF THESE STORMS
HAVE THE POTENTIAL TO BECOME SEVERE WITH LARGE HAIL, STRONG
WINDS AND LOCAL DOWNPOURS. ISOLATED TORNADOES CANNOT BE RULED
OUT WITH SYSTEM.
THIS IS AN ALERT TO THE POTENTIAL DEVELOPMENT OF SEVERE
THUNDERSTORMS WITH LARGE HAIL AND DAMAGING WINDS.
MONITOR WEATHER CONDITIONS..LISTEN FOR UPDATED STATEMENTS.
IF THREATENING WEATHER APPROACHES TAKE IMMEDIATE SAFETY
PRECAUTIONS.
TORNADO WARNING FOR:
ST. THOMAS - AYLMER - EASTERN ELGIN COUNTY
SIMCOE - DELHI - NORFOLK.
AT 10:50 PM EDT DOPPLER RADAR INDICATED A SEVERE THUNDERSTORM
CAPABLE OF PRODUCING A TORNADO. THIS DANGEROUS THUNDERSTORM IS
LOCATED WEST OF AYLMER AND IS TRACKING EAST AT 60 KM/H.
THIS IS A WARNING THAT SEVERE THUNDERSTORMS WITH TORNADOES ARE
IMMINENT OR OCCURRING IN THESE REGIONS. MONITOR WEATHER
CONDITIONS. TAKE IMMEDIATE SAFETY PRECAUTIONS.
SEVERE THUNDERSTORM WARNING FOR:
WOODSTOCK - TILLSONBURG - OXFORD COUNTY.
AT 10:20 PM EDT DOPPLER RADAR INDICATED A LINE OF SEVERE
THUNDERSTORMS FROM NEAR CHATHAM TO WHEATLEY. THIS LINE OF
SEVERE THUNDERSTORMS WAS MOVING TOWARD THE EAST AT 60 KM/H, AND
WAS CAPABLE OF PRODUCING WIND GUSTS IN EXCESS OF 90 KM/H.
DOPPLER RADAR HAS INDICATED SOME WEAK ROTATION WITHIN THIS
LINE. WHILE NOT IMMEDIATELY LIKELY, TORNADOES CANNOT BE RULED
OUT WITH THIS LINE OF THUNDERSTORMS.
THIS IS A WARNING THAT SEVERE THUNDERSTORMS ARE IMMINENT OR
OCCURRING IN THESE REGIONS. REMEMBER SOME SEVERE THUNDERSTORMS
PRODUCE TORNADOES..LISTEN FOR UPDATED WARNINGS.
EMERGENCY MANAGEMENT ONTARIO RECOMMENDS TAKING COVER
IMMEDIATELY WHEN THREATENING WEATHER APPROACHES.
NOTE..A SUMMARY OF ALL WARNINGS AND WATCHES FOR SOUTHERN
ONTARIO IS AVAILABLE IN THE WWCN11 CWTO BULLETIN ISSUED
IMMEDIATELY FOLLOWING THIS BULLETIN.
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WATCHES/WARNINGS ENDED FOR SOUTHERN ONTARIO...
SEVERE THUNDERSTORM WATCH ENDED FOR:
WINDSOR - LEAMINGTON - ESSEX COUNTY
SARNIA - LAMBTON
LONDON - MIDDLESEX.
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==DISCUSSION==
PLEASE REFER TO THE LATEST PUBLIC FORECASTS FOR FURTHER DETAILS.
END/OSPC

368
WFCN11 CWTO 050251
TORNADO WARNING
UPDATED BY ENVIRONMENT CANADA
AT 10:51 PM EDT FRIDAY 4 JUNE 2010.
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TORNADO WARNING FOR:
=NEW= ST. THOMAS - AYLMER - EASTERN ELGIN COUNTY
SIMCOE - DELHI - NORFOLK.
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==DISCUSSION==
AT 10:50 PM EDT DOPPLER RADAR INDICATED A SEVERE THUNDERSTORM CAPABLE
OF PRODUCING A TORNADO. THIS DANGEROUS THUNDERSTORM IS LOCATED WEST
OF AYLMER AND IS TRACKING EAST AT 60 KM/H.
THIS IS A WARNING THAT SEVERE THUNDERSTORMS WITH TORNADOES ARE
IMMINENT OR OCCURRING IN THESE REGIONS. MONITOR WEATHER CONDITIONS.
TAKE IMMEDIATE SAFETY PRECAUTIONS.
NOTE..A SUMMARY OF ALL WARNINGS AND WATCHES FOR SOUTHERN ONTARIO IS
AVAILABLE IN THE WWCN11 CWTO BULLETIN ISSUED IMMEDIATELY FOLLOWING
THIS BULLETIN.
NOTE..A SUMMARY OF ALL WARNINGS AND WATCHES FOR SOUTHERN ONTARIO IS
AVAILABLE IN THE WWCN11 CWTO BULLETIN ISSUED IMMEDIATELY FOLLOWING
THIS BULLETIN.
END/OSPC